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Eating in front of the TV. Roper Reports asked a random sample of people in 30 countries whether they agreed with the statement I like to nibble while reading or watching TV. Allowable responses were Agree completely, Agree somewhat, Neither disagree nor agree, Disagree somewhat, Disagree completely, and I Don t Know/No Response. Does a person s age influence their response? Here are data from 3792 respondents in the 2006 sample of five countries (China, India, France, United Kingdom, and United States) for three age groups (Teens, 30 s (30 - 39) and Over 60):
a) Make an appropriate display of these data.
b) Does a person's age seem to affect their response to the question about nibbling?
What are the advantages and disadvantages of each? Explain how the empirical rule help explain the ways in which the values in a set of numerical data cluster and distribute?
to decide whether two different types of steel have the same true average fracture toughness values n specimens of each
The article "Second Moment Reliability Evaluation vs. Monte Carlo Simulations for Weld Fatigue Strength" (Quality and Reliability Engr. Intl., 2012: 887-896) considered the use of a uniform distribution with A = .20 and B = 4.25 for the diameter X..
Calculate and interpret a 99% confidence interval for the difference between true means. Is uoride toothpaste beneficial?
To test this claim, an analyst looks at a random sample of 100 real estate deals in the period in question and finds a sample mean of 14.1% and a sample standard deviation of 2.6%. Conduct a twotailed test using the 0.05 level of significance.
1. suppose an experiment has five equally likely outcomes e1 e2 e3 e4 e5. assign probabilities to each outcome and
For one new product to be produced by the Aplus Company, bushings will need to be drilled into a metal block and cylindrical shafts inserted into the bushings.
For the random variables below, indicate whether you would expect the distribution to be best described as geometric, binomial, Poisson, exponential, uniform, or normal and explain in one sentence why so?
Suppose that a random requisition is found to have been incorrectly entered. What is the probability that it was processed by data entry specialist 3?
Find the first and third quartiles for a standard normal distribution.- Find the inner fences for a standard normal distribution.- Find the probability that Z is beyond the inner fences.
Measures of Central Tendency
Assume that the event "Mary takes Mathematics 23 and Government 35" is more likely than the event "Mary takes Mathematics 23." Why are we not making this fallacy here?
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